Register



p 1943- L. P. CROSMAN 2,330,689

REGISTER Original Filed Nov. 29, 1941 6 Sheets-Sheet 1 v'IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII;

Sept. 28, 1943. c os 2,330,689

REGISTER Original Filed Nov. 29, 1941 6 Sheets-Sheet 2 Sept. 28, 1943. cos 2,330,689

REGISTER Original Filed Nov. 29, 1941 6 Sheets-Sheet 5 Sept. 28, 1943.L. P. CROSMAN 2,330,689

REGISTER Original Filed Nov. 29, 1941 6 Sheets-Sheet 4 x INVENTOR W WZnos/p fa @2Ww JW mm A Sept. 28, 1943.

L. 1 CROSMAN 2,330,689

REGISTER 1 Original Filed Nov. 29, 1941 6 Sheets-Sheet 5 Jur 7 3 Sept.28, 1943.

L. P. CROSMAN REGI STER Original Filed Nov. 29, 1941 6 Sheets-Sheet 6 nA S Patented Sept. 28, 1943 REGISTER Lorin; Pickering Crosman, SouthOrange, N. J.,

assignor to Monroe Calculating Machine Company, Orange, N. J acorporation of Delaware Original application November 29, 1941, SerialNo.

Divided and this application November 25, 1942, Serial No. 466,936

3 Claims.

The invention has relation to registers and more particularly to theclutch engaging and digit key latching means of a motor drivenregistering machine, the present application being a division ofapplication Serial Number 421,016, filed November 29, 1941, relating tooperation control mechanism.

The invention consists in the novel construetion and combination ofparts, set forth in the appended claims.

In the accompanying drawings, illustrating the invention:

Fig. 1 i a vertical section of an adding listing machine embodying theinvention, said section being taken through the digit value keyboard.

Fig. 2 is a right side elevation of the operating keys, the sign controlslide and associated parts.

Fig. 3 is a detail plan view of the clutch release slide.

Fig. 4 is a detail right side elevation of the quick stroke slide andassociated parts.

Fig. 5 is a detail plan view of the operation control slides andassociated parts.

Fig. 6 is a right side elevation showing the accumulator meshing means,the slide controlling the digit index bars, etc.

Fig. 7 is a fragmentary bottom plan of the digit value and operatingkeyboard, showing certain interlock mechanism.

Fig. 8 is a similar view of the operation key interlocks.

Fig. 9 is a detail left side elevation of a portion of the operatingtrain.

Fig. 10 is a right side elevation showing the accumulator zeroizingslide and associated total mechanism.

The invention is shown as applied to a machine similar to that disclosedin United States Patent No. 1,932,013, issued October 24, 1933, toLoring P. Crosman, and entitled Registers. The printing mechanismillustrated forms the subject matter of an application for patent,Serial Number nected each with a digit index bar 6I5, and the rearwardarm being pivotally connected each with a type bar 6H 01 the printingmechanism. The actuators 6I0 are normally held under restraint of aseries of zero latches 2I4, each zero latch being releasable upondepression of any key 2I5 in the same column by means of a slide 2I3.Upon operation of the machine, and movement of frame BIB, the releasedactuators will be rotated counter-clockwise until stopped by contact oia lug of the related index bar 6I5 with the stem of the depressed key,thereby registering the value of said key in the related accumulatorwheel and setting the type bar 6| I into position to print the digit.

Addition Addition is effected by the depression of a motor key II4 (Fig.2), the stem of which is provided with a cam surface 40, acting in thedepression of the key to move a slide 4I forwardly, thereby operating abell crank lever 42 having a roller 43 engaging a notch formed in aspring operated slide 44, illustrated also in Figs. 3 and 4. Slide 44 isprovided with 8. lug 45, which, upon depression of key H4 and operationof slide 44,

will engage with the upper arm of a pivoted latch H2, thereby releasingthe clutch control lever I06 from said latch, whereupon said lever willbe moved counter-clockwise by its spring, an insulation roller I09 onsaid lever thereupon acting to close a switch II 0 in the circuit of anelectric motor I00. In this movement the lower end of lever I06 will bedisengaged from the tail of a spring urged clutch pawl I03, allowingsaid pawl to fall into engagement with the driving clutch member I04,driven by motor I00. Pawl I03 is mounted upon a plate I05, this platebeing rotated counter-clockwise upon engagement of the clutch. Plate I05is connected by link I08 with a lever 3I6, fulcrumed upon shaft 30I,rotation of the plate serving to reciprocate said lever, the shaft 30I,and a cam 3I8, which operates to effect reciprocatory movement of frameBIS, in known manner. 7

The wheels of the accumulator 413 are rotated additively upon the returnstroke of the actuators 6I0, the timed meshing and unmeshing of theaccumulator gears being controlled by mechanism disclosed in UnitedStates Patent No. 2,055,623 granted September 29, 1936, to Loring P.Crosman, and entitled Calculating machine.

As shown in that patent, the accumulator pinions 403 (Fig. 1) standnormally in mesh with the segment gears of actuators (N0, theaccumulator shaft 412 being mounted in guide slots of the machine frameso that the accumulator assembly may be moved radially of the actuators,

to mesh and unmesh the pinions 403. As shown in Fig. 6, the shaft 412 isadjusted by means of toggle linkage in, one member of which is fast upona rock shaft 2. The linkage is held in either of two adjusted positionsby means of a toggle spring ll. Fast upon shaft 2 is a plate 4! 9,having yieldable spring connection 4 with an arm 5 provided with alateral flange 22, and

, pivoted at 33 upon said arm is a switch 6, flange 22 and switch 6lying in the plane of a roller 1 I fixed upon lever sit.

In additive operations roller 71 will contact with a cam surface 2| ofswitch 6 and thereafter with the rear end of flange 22, whereby arm 5will be raised, thus rocking shaft 2 and linkage II), to uninesh thepinions 403 of the accumulator before the actuators are allowed to move.During the forward movement of actuators 6), arm 5 will be held inraised position by engagement of roller l with the lower surface offlange 22. At the end of the forward stroke, roller I! will lift theforward end of switch 6 away from a lug 2d of arm 5, and will thereaftermove out of contact with the switch, which will return into normalrelation with the arm. Upon the return stroke of the operatingmechanism, roller 7 will engage a cam surface 23 of switch 6, restoringarm 5 and the parts 399, Md and s12 to original position, remeshing thepinions 403 with the segments to effect the registration.

The forward movement of slide Li t to engage the clutch will serve tolock key iii-l in depressed position, by engagement of an ed e portionof said slide with a shoulder it (Fig. 6) of the key stem, thus holdingthe key in depressed position until restoration of slide 35, ashereinafter explained. Forward movement of slide 46 also serves to lockother operation keys in raised Position, adjacent portions of the slidecoming into position below the key stems. In order to prevent anerroneous Operation of the machine from a rapid or incomplete operationof the motor key, a quick stroke slide d! is provided (Fig. 4), normallyheld in rearward position, against the tension of a spring, byengagement of a lug 48 of said slide with the .end of slide 44. A bailB9 underlies the stem of key H4, and is displaced thereby when the keyis depressed, bringing an edge of the ball into position to engage ashoulder 50 of slide 41. Thus, when key H4 is properly operated, slide61 will be prevented from moving forward under the influence of itsspring, whereas in case key 4 is depressed suiilciently to release slidefrom roller 33, but is not held long enough to be engaged by slide 46,the restoration of the key by its spring 5! will allow the spring bail49 to rise out of the path of shoulder 50, and slide 41 will moveforwardly. The forward movement of slide 4? will rock a bell crank lever'52 clockwise as viewed in Fig. 4, bringing one arm of said lever intoposition to be engaged by a shoulder 53 of slide 54, thus locking saidslide in partially operated position and leaving latch H2 in engagementwith clutch control lever I06. Thus misoperation of the machine will beprevented, and the parts will be held in inactive position until slide44 is retracted by a manual operation hereinafter set forth.

In machines of this character, erroneous registrations are sometimesmade by th failure of the operator to fully depress one of the digitentering keys 2": and according to the present invention means areprovided whereby a semi-depressed key will be locked in itssemi-depressed position. and whereby under these circumstances theengagement of the clutch I 03, I 94 will be prevented.

Each column of digit keys is provided with a latching slide 54 (Figs. 1and 7), movable forwardly upon depression of a key, by means of a camsurface ofthe key stem, into engagement with an intermediate lockingshoulder 55 or with a full depression locking shoulder 58, slide 56being held in engagement with one or the other of these shoulders bymeans of a retraction spring 57. Forward movement of slide 55 upondepres-' sion of a key 2l5 will bring a beveled end of the slide intoregister with a notch formed in a transverse slide 58, so that if thekey is latched in partially depressed position slidebd will prevent anyconsiderable transverse movement of slide 58.

Slide 58 engages one arm of a bell crank lever 59, fulcrumed upon aframe plate of the keyboard and having link connection 60 with a pawl 6!carried upon the end of a bell crank lever 62 which is also fulcrumedupon the frame plate. A

spring 63 normally holds the parts 58, 59, B0 and 6! in position inwhich the pawl 6i engages a pin 66 fixed in the slide 56, and uponrelease of said slide pressure will be exerted thereby to move slide 58toward the left. Thus upon operation of the add key lid, if any of. thedigit keys 2l5 are locked in partially depressed position, the slide 58can be moved only a short distance to the left, and pawl 'Bl, throughpin 66, will hold slide 46 in partially operated position, whereinroller 43 will rest on top of the slide, but wherein latch i l 2 willnot be disengaged. In this position of the parts key H will be lockeddown and the other operation keys will be inoperative because of theprovision of suitable interlocks, to be described hereinafter, andfurther because of the locking action of slide 1%. Therefore, themachine will remain at rest until the keyboard is manually cleared oruntil the partially depressed key or keys are fully depressed by theoperator. Upon full depression of the keys, slides 54 will be allowed tomove rearwardly, into engagement with the shoulders 5t of the keys,freeing slide 58 and the train of mechanism between said slide and theslide 64, whereupon the latter slide will be operated by its spring todisengage latch H2 and effect engagement of the clutch. Slide M willalso engage a rearward extension of pawl 6i, effecting positiverestoration of slide 58.

Near the end of the cycle of operation of the machine, and afteractuators 6H3 have been brought to rest, means will be operated forreleasing the set digit keys 2i5 and the operation key, for disengagingthe clutch and for restoring the control elements to normal position.For this purpose an antifriction roller mounted on a lever 65 (Fig. 10)will be engaged by a cam projection of plate I05, and rocked clockwiseagainst tension of a spring 86. A lever 67 is connected to lever 65 by aspring 88, lever 51 extending upwardly into the path of movement of thelug 45 of slide 46. Displacement of lever 65 by the cam surface of plateI05 will therefore retract slide 44 to and rearwardly beyond its normalposition of rest, this extra rearward movement being utilized to clearthe digit keyboard. For this purpose a 1 pin 69 on slide 44 is broughtinto contact with one arm of a lever 10 (Fig. 7) intermediatelyfulcrumed upon a frame plate of the keyboard, rocking said lever intocontact with a shutter plate H (see also Fig. 1) having lugs engagingshoulders of the slides 56. Slides 54 will thus be moved forward,releasing the keys 215 from depressed posi= tion and allowing themsprings Retraction of slide 44 will also unlock the operation key andwill allow roller 43 to fall into latching engagement with said slide.

If repeat operations are to be performed, the operator maintains'flngerpressure upon the add key H4, whereby roller 43 is held out of enga ingposition with slide 44, so that when, during the final portion of thecycle, the roller 0! lever 65 drops from the highpoint of the cam ofplate I05, lever 81 will be moved forwardly and slide 44 released forforward movement, providing for a second cycle of operation of themachine. When to be restored by their key H4 is so held a portion 12 orthe key stem (Fig. 6), lying opposite the locking shoulder 46. willprevent retraction of slide 44 rearward beyond normal position, thisbeing permitted by the tensioning of spring 68 and providing for nonclearing of the digit keyboard.

The keyboard may be manually cleared, and

any depressed operation key which has been locked because of anerroneous quick stroke operation may also be released by means of alever 13 (Fig. fulcrumed on the framing of the machine extending throughthe keyboard plate, said lever being adapted to contact and push slide44 from operated position to its extreme rearward, keyboard clearingposition. Manual release of the lever will permit the spring of slide 44to restore the parts to normal position.

Subtract and non-add Operations Subtract and non-add operations areperformedin response to the depression of a subtract key 214 and anon-add key 215 respectively, these keys controlling the positioning ofa slide 14 (Fig. 2), which in turn controls the adjustment of the switch8. Slide 1.4 is held normally under the tension of a spring 15 byengagement of the upper end of a lever 16 with a shoulder of the slide,lever 16 being provided with an anti-friction roller normally engagingthe high point of the cam portion of plate I05. In the operation of themachine lever 16 will be reciprocated, and slide 14 will be allowed tomove forward under the influence of spring 15. In additive operations,however, this forward movement of slide 14 is prevented by engagement ofa shoulder 11 of the slide with the bail 49 which has been displaced bythe add key I I4. There is no shoulder on slide 14 which may contactwith the ball 49 of subtract key 214, so that when the subtract key isdepressed and the machine operated, slide 14 will move to its extremeforward position. Depression of non-add key 215 will bring its bail 49into the path of movement of a shoulder 18 of slide 14, to-provide forpartial forward movement of said slide. Thus slide 14 will beselectively positioned according to the key depressed, the threepositions of the slide being transmitted to switch 6 by means of an arm19, pivoted to the slide, and held in relation thereto by the spring 15,and a link 80 connecting arm 19 with an arm of the switch.

Depression of the subtract key will thus efiect rocking of switch 6clockwise about its pivot point 33, whereby cam surface 2| of the switchwill lie out of the path of movement of roller 1. Therefore, upon theforward stroke of the operating mechanism roller 1 will move idly overflange 22, allowing the pinions 403 of the accumulator to remain in meshwith the segments during the subtractive stroke thereof. At the end ofthe forward stroke roller 1, having momentarily displaced and passedbeyond the switch, will be positioned adjacent the surface 34 or theswitch, with which it will engage during the return stroke oi theoperating mechanism, to raise arm 5 and disengage the pinions from thesegments before additive movement thereof. During this return movementroller 1 passes beneath flange 22, and near the end of the movement willengage a projection 35 of arm 5, to restore the parts to normalposition. 7

All of the operation keys are identical in construction, and subtractkey 214, aside from the adjustment of switch 6, will provide for thesame functioning of the machine as in the case of add key 4,

Non-add key 215 will also provide for the same functioning of themachine except that switch 6 will be rocked only sufficiently to bringcam surface 2! parallel with the end of flange 22 of arm 5. This willbring the entire switch below the upper line of the flange, except for aprojection of the forward end of the switch above said line. This,however, does not result in any deflection of arm 5, since in the returnstroke of the operating mechanism roller 1 will engage a cam surface 23of the switch, momentarily rocking the same. Therefore, in non-addoperations roller 1 will be reciprocated without effecting unmeshing ofthe pinions 403, and any amounts subtracted from the accumulator wheelsby the actuators during the forward stroke of the operating means willbe added back during the return stroke.

Total and sub-total As is usual in machines of this type, totals areprinted by disengaging the actuators em from their column latches 2H,and from the frame Hi6 and allowingthem to move subtractively under theinfluence of their springs, to rotate the accumulator wheels to zero, inwhich position the wheels are held by engagement with appropriate stops,after which the cycling of the machine will effect normal operation ofthe printing means at the end of the forward stroke of the opera-tingmeans, whereafter frame 616 will pick up and return the actuators tonormal position.

These and other special functions are effected upon depression of thetotal key 218, under control of slide 14 and of other spring slideslying beneath the balls 49 of the operating keys.

Depression of total key 218 will release slide 44 and start motoroperation, as previously described for the other keys, and it will alsoallow full movement of slide 14, to provide for subtractiveoperation-that is to say, the accumulator pinions 403 will be left inmesh during the zeroizin-g operation, and will be unmeshed before theadditive stroke of the actuators Sill is effected.

The zeroizing of the accumulator wheels is eifected by successiveoperation of the wheels from right to left of the accumulator, as inPatent No. 1,932,013, hereinbefore referred to, this action beingcontrolled by spring operated means. In the present instance, however,it is desired to effect the various adjustments of the controllingmechanisms by power from the motor, and consequently the clutch will beengaged upon depression of the total key, will be allowed a limiteddriving movement, and then the motor operation will be interrupted togive time for the completion of the zeroizing operation, at theconclusion of which the clutch will be reengaged and the cycle ofoperation completed. For this purpose a slide 8| (Fig. 10),

which is locked out of operation by the balls 49 of the add, subtractand non-add keys, will be allowed to operate under the influence of itsspring 82, said slide having a pivoted link 83 having pin and slotengagement with a latch 86. Upon forward movement of slide 8i (efiectedupon forward movement of arm link 83, in the movement thereof about itspoint of connection with the latch, will have its lower end moveddownwardly, tensioning a spring 85 which will tend to move latch 863clockwise about its pivotal support. The free end of latch M hasengagement with a spring pressed arm 86, pivoted upon the machine frameand having an antifriction roller engaging the cam surface of plate 505.During the first part of the cycle of the operating means the roller ofarm 86 will climb to the high point of the cam, rotating arm 85clockwise and allowing latch 84 to fall into a'notch formed in the upperend of said arm. Am 88 has a rearward extension 87 which will be held bylatch 8% in the path of rotary movement of the clutch pawl I83,engagement of the pawl with extension 87 serving to disengage the pawlfrom the driving member I M of the clutch and to hold it in disengagedposition. I

.Slide BI also has link connection 88 with an arm I36, pivoted upon .themachine frame and provided with a finger I33 which will be broughtduring the movement of slide SI into contact with the releasing arm 62Iof a latch 620, disengaging said latch from a projection 62? securedupon a total segment 6I8, thereby releasing the segment for operationunder the influence of a spring 68L Segment M8 drives a pinion securedon the end of a shaft 601 (Fig. 1), extending across the machine, saidshaft being provided with a series of helically disposed pins which willsuccessively trip a series of dogs fill, normally securing the actuators6 ID to frame BIS. Dogs 6" are also provided with shoulders normallyrestraining a series of spring pressed stops M3 in negative position.Upon displacement of a dog BI'I the related stop 6I3 will be released,being brought by its spring into the path of movement of a zero stop 457of the related accumulator wheel. During this preliminary setting of thetotal controls, the column latches 2M will also be released, in themanner hereinafter described, so that actuators SIB upon successiverelease from the frame GIG will be moved by the springs to rotate therelated accumulator wheels to zero.

Upon complete rotation of shaft 681, the projection B2! of segment 618will contact with a rearward extension of the arm 62I, rocking theforward end of said arm out of contact with the finger I33, and allowinglatch 620 to move under influence of its spring into position toreengage the extension 62! upon restoration of segment BIB. Also, atthis time, a pin 89, fixed in segment 6I8,-will engage a depending armof latch 8 rocking said latch out of engagement with arm 86, whereuponsaid arm will be rotated counter-clockwise by its spring to move theextension 81 out of restraining contact with clutch pawl I03. Thereuponpawl I 03 will reengage with driving member I04 and the operating cycleof the machine will be resumed. During the forward stroke of theoperating means, segment 6I8 will be restored to normal position and re-,engaged by its latch 620, this restoring means being well known and notillustrated in the present disclosure.

In order that the keyboard may be free for the setting up of an itemduring the total taking J operation, the index bars SIS are designed tobe shifted laterally out of position of engagement with the key stems. Asimilar arrangement was proposed in United States Patent No. 2,087,182,isued on July 13, 1937 to Loring P. Crosman, entitled Listing addingmachines." However, the means of the present disclosure are of improvedconstruction, and are designed topermit setting of the digit keys duringany portion of the totalizing operation.

The index bars 6I5 are supported near their ends in sliding plates 98(Fig. 5), urged toward the right hand side of the machine by springs M.The ends of the bars are engaged by a pair of bell crank levers 92,these levers being provided with shoulders engaging lugs 93 of a slide9G. Slide 9% lies parallel to the'slides I6 and 8E, and is likewisecontrolled by the operation of lever '76; Bails d9 of the add, subtract,and nonadd keys are depressible into position in front of shoulders 95(Fig. 6) of the slide, to prevent operation thereof. Normally the leverI65, through slide 95, will serve to'hold the index bars SIS in normalrelation to the digit keys 2E5 and to the zero latches 2M, as seen inFig. 5. Upon the initial movement of lever 75, permitting forwardmovement of slide 94, springs 9| will move plates and index bars 6I5toward the right, out of position of contact with the keys and also outof contact with the zero latches 255. The plates 90 operateindividually, so that there can be no jamming of the parts due totwisting action.

In order that amounts set on the keyboard will not be cleared during thetotaling operation, the bail d9 of the total key is provided-with anextension 96 (Figs. 2 and 3) which will be held by the key in positionto engage a shoulder 91 of slide 44 and prevent movement of said sliderearward beyond its normal position, thus preventing the clearing of thekeyboard, as previously explained.

Means are also provided whereby partial depression of a digit key 2I5will not prevent a total taking operation, but wherein the parts willremain in position to prevent subsequent operation of the other keysuntil the keyboard has been cleared or the digit keys properlydepressed.

This means is shown as associated with a series of interlocking membersbetween the operation keys 218, 213, M4, 214 and 215 (Fig. 8). Theinterlocking means comprises a series of plates 98 located each betweentwo adjacent operating keys, and having shoulders engageable by the keystems. As seen in Fig. 6, the portions of the key stems engaged byplates 98 are wedge shaped, so that in the depression of any of theoperating keys the two adjacent'plates 98 will be moved or held inopposite directions, against the stems of the next adjacent keys.

It will be obvious, therefore, that the plate lying between sub-totalkey 213 and. add key I will be moved or held in forward position .upondepression of the add key and in rearward posi-= tion upon depression ofthe total key 218 or subtotal key 213. A pin 99 is fixed in this plate98,

and projects downwardly into engagement with a slot of the bell cranklever 62 hereinbefore referred to. During operations controlled by theadd, subtract or non-add keys the pin 99 will lie in the positionillustrated in Fig. '7, and pawl BI will act to lock slide 44. Upondepression of the total or sub-total key, however, rearward movement ofpin 99 will rock bell crank lever 62 clock- 2,sao,eso

wise, withdrawing pawl 6| from position of contact with the pin 64 ofslide 44, so that the slide will not be locked, should a key 2|! bepartially depressed, until after the release of the total or sub-totalkey. In a subsequent operation of the machine by key Ill, 2'" or 21! thepin 88 and bell crank lever I! will remain in the position illustrated,and tripping oi the clutch will be prevented.

Sub-total key 213 operates precisely in the manner 01 total key 218,except that slide 14 is held in its partially operated position byengagement of the ball 48 with a shoulder ll of the slide. Thus switch lis held in the same position as that assumed in non-add operations,whereby the total, subtracted from the accumulator wheels, is restoredthereto during the return stroke of the operating mechanism.

It is intended, when the clutch is disengaged by contact of clutch pawllllwith lever I" or with the extensionll of arm 88, that rebound of thedriven parts will be resisted by the rollers 01' arms 65 and I6, and inorder to permit eiiective checking action the usual heavy spring I40(Fig. 9), used to assist in smoothing the load on the motor, is providedwith lost motion connections with its anchor Ill and with the arm 2 ofshaft 30!.

I claim: I

1. In a motor driven register having a driving train, a clutch in saidtrain, a series of operation keys, digit entering means comprisingspring retracted settable keys, and latches engaging the digit keys tomaintain them in set position; a normally restrained spring actuatedmember releasable by any operation key to engage the clutch, springmeans operable by the driving train to retract said springactuatedmember to and beyond normal restrained position, and meansoperable by said member in the movement thereof beyond normal positionto disengage the key latches and thereby release any set digit keys fromset position.

2. In a motor driven register having a driving train, a clutch in saidtrain, a series of depressible operation keys, digit entering meanscomprising spring retracted settable keys, and latches engaging thedigit keys to maintain them in set position; a normally restrainedspring actuated member releasable by any operation key to engage theclutch, spring means operable by the driving train to retract saidspring actuated member to and beyond normal restrained position, andmeans operable by said member in the movement thereof beyond normalposition to disengage the key latches and thereby release any set digitkeys from set position, said operation keys having stems movable intothe path of movement oi said member to prevent movement thereof beyondnormal position when the operation keys are retained in depressedposition during repeat operations.

3. In a motor driven listing register having a driving train, a clutchin said train, a series of operation keys including registrationinitiatin keys and a total key, and digit entering means comprisingsettable keys; a normally restrained spring actuated member releasableby any operation key to engage the clutch, latches engageable to holdthe digit entering keys alternatively in partially set or in fully setposition, locking means displaceable by a latch engaged with a partiallyset key to bring an element of said means into the path of eiiectivemovement of the clutch engaging member and alternatively cooperatingwith the actuated clutch engaging member. to engage the latches and lockthe digit entering keys in their fully set and in their unset positions,and means operable by the total key to disable the locking means andprevent cooperation thereof with the latches during a totalingoperation.

LORING PICKERING CROSMAN.

